Chemometrics‐assisted color histogram‐based analytical systems

This review systematizes for the first time the here called “Chemometrics‐assisted color histogram‐based analytical systems” under the acronym CACHAS. A comprehensive discussion of the fundamentals, general characteristics, and applications are presented in order to direct practical aspects for deve...

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Bibliographic Details
Published in:Journal of chemometrics 2020-12, Vol.34 (12), p.n/a
Main Author: Gonçalves Dias Diniz, Paulo Henrique
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemometrics
Color
Digital cameras
Digital imaging
Frequency distribution
green analytical chemistry
Histograms
Image acquisition
Image processing
Mathematical analysis
Microbiological analysis
multivariate calibration
pattern recognition
Qualitative analysis
RGB color space
Systems analysis
Webcams
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Summary:This review systematizes for the first time the here called “Chemometrics‐assisted color histogram‐based analytical systems” under the acronym CACHAS. A comprehensive discussion of the fundamentals, general characteristics, and applications are presented in order to direct practical aspects for developing methods that use color histograms as input data for the construction of chemometric models. For this, analytical information is rapidly acquired using a simple image acquisition device (such as digital camera, webcam, scanner, or smartphone), without need for any image processing, other than extraction of the histograms, which are constructed by counting the frequency distribution of the different color tones (conveniently specified through a color space) of all pixels delimited by a region of interest in a digital image. As a consequence, CACHAS have been increasingly used for qualitative and quantitative purposes in food, agricultural, forensic, biomedical, and microbiological analysis, reinforcing the principles of green analytical chemistry.
ISSN:0886-9383
1099-128X
DOI:10.1002/cem.3242